- InChI
- InChI=1S/C2F2/c3-1-2-4
- InChI Key
- BWTZYYGAOGUPFQ-UHFFFAOYSA-N
- Formula
- C2F2
- SMILES
- FC#CF
- Molecular Weight1
- 62.02
- CAS
- 689-99-6
- Other Names
-
- Acetylene, difluoro-
- Difluoroacetylene
- FC«equiv»CF
- Difluoroethyne
- C2F2
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- ΔfG° : Standard Gibbs free energy of formation (kJ/mol).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- ΔfusH° : Enthalpy of fusion at standard conditions (kJ/mol).
- ΔvapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
- IE : Ionization energy (eV).
- log10WS : Log10 of Water solubility in mol/l.
- logPoct/wat : Octanol/Water partition coefficient.
- McVol : McGowan's characteristic volume (ml/mol).
- Pc : Critical Pressure (kPa).
- Tboil : Normal Boiling Point Temperature (K).
- Tc : Critical Temperature (K).
- Tfus : Normal melting (fusion) point (K).
- Vc : Critical Volume (m3/kmol).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ΔfG° | -220.86 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | -190.00 ± 30.00 | kJ/mol | NIST |
| ΔfusH° | 10.22 | kJ/mol | Joback Calculated Property |
| ΔvapH° | 20.56 | kJ/mol | Joback Calculated Property |
| IE | [11.18; 11.40] | eV |
|
| IE | 11.18 | eV | NIST |
| IE | 11.18 | eV | NIST |
| IE | 11.40 ± 0.50 | eV | NIST |
| log10WS | -1.15 | Crippen Calculated Property | |
| logPoct/wat | 0.844 | Crippen Calculated Property | |
| McVol | 33.980 | ml/mol | McGowan Calculated Property |
| Pc | 5569.17 | kPa | Joback Calculated Property |
| Tboil | 252.70 | K | Joback Calculated Property |
| Tc | 415.22 | K | Joback Calculated Property |
| Tfus | 219.58 | K | Joback Calculated Property |
| Vc | 0.145 | m3/kmol | Joback Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [46.30; 54.65] | J/mol×K | [252.70; 415.22] |
|
| Cp,gas | 46.30 | J/mol×K | 252.70 | Joback Calculated Property |
| Cp,gas | 47.78 | J/mol×K | 279.79 | Joback Calculated Property |
| Cp,gas | 49.22 | J/mol×K | 306.87 | Joback Calculated Property |
| Cp,gas | 50.63 | J/mol×K | 333.96 | Joback Calculated Property |
| Cp,gas | 52.00 | J/mol×K | 361.05 | Joback Calculated Property |
| Cp,gas | 53.34 | J/mol×K | 388.13 | Joback Calculated Property |
| Cp,gas | 54.65 | J/mol×K | 415.22 | Joback Calculated Property |
Similar Compounds
Find more compounds similar to Ethyne, difluoro-.
Sources
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